CN112240402A - Well head plate valve - Google Patents
Well head plate valve Download PDFInfo
- Publication number
- CN112240402A CN112240402A CN202011173350.XA CN202011173350A CN112240402A CN 112240402 A CN112240402 A CN 112240402A CN 202011173350 A CN202011173350 A CN 202011173350A CN 112240402 A CN112240402 A CN 112240402A
- Authority
- CN
- China
- Prior art keywords
- sealing cavity
- flashboard
- cavity
- filling
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 238000012856 packing Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 16
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract 1
- 230000008676 import Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 16
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a wellhead flat gate valve, which comprises: the valve body is provided with a middle cavity, a left sealing cavity, a right sealing cavity, a lower sealing cavity, an inlet runner and an outlet runner, wherein the middle cavity, the left sealing cavity, the right sealing cavity and the lower sealing cavity are communicated with each other; a valve cover; a valve stem; the flashboard, the flashboard set up in the well intracavity, and with valve rod swivelling joint works as when the flashboard removes to left sealed chamber, right sealed chamber, lower sealed chamber, the flashboard with the lateral wall in left sealed chamber, right sealed chamber, lower sealed chamber closely laminates to the separation import runner and exit flow way, the lower extreme both sides of flashboard are connected with first packing subassembly and second packing subassembly respectively, when the flashboard was opened, first packing subassembly can be filled into in the left sealed intracavity, the second packing subassembly can be filled into in the right sealed intracavity, thereby avoid the medium to flow into right sealed chamber to the impurity of avoiding the silting produces the destruction to the flashboard.
Description
Technical Field
The invention relates to the technical field of pipeline valves, in particular to a wellhead flat gate valve.
Background
The wellhead device and the Christmas tree are important equipment for oil and gas exploitation, and comprise a casing head, a tubing head and a Christmas (gas) tree, which are used for connecting casing strings and tubing strings, sealing annular spaces among various layers of casings and among oil pipes, controlling the pressure of a production wellhead and regulating the flow of the oil (gas) wellhead, and can also be used for special operations such as acidizing fracturing, water injection, testing and the like, thereby meeting different working conditions, being reliable in sealing and safe in working. The function of controlling and adjusting the flow of the oil well and the pressure of the well mouth needs to be realized by a valve, wherein the gate valve plays a more critical role and is the valve with the largest oil field dosage. On oil gas field wellhead assembly and production tree, the medium of effect is mud, and traditional type high pressure plate gate valve is in the use, and its mud can get into the valve body lumen to the side position of the left and right disk seat in this lumen, the removal route when leading to the flashboard to close is obstructed, destroys the flashboard easily.
Disclosure of Invention
In view of the above, it is necessary to provide a wellhead flat gate valve which has a reasonable structure and prevents slurry medium from being retained at a side position between the left and right valve seats.
The invention discloses a wellhead flat gate valve, which comprises:
the valve body is provided with a middle cavity, a left sealing cavity, a right sealing cavity, a lower sealing cavity, an inlet channel and an outlet channel, wherein the middle cavity, the left sealing cavity, the right sealing cavity and the lower sealing cavity are communicated with each other;
the valve cover is arranged at the upper end of the valve body in a covering manner;
the valve rod penetrates through the valve cover and is in threaded connection with the valve cover;
the flashboard is arranged in the middle cavity and is rotationally connected with the valve rod, when the flashboard moves to the left sealing cavity, the right sealing cavity and the lower sealing cavity, the flashboard is tightly attached to the side walls of the left sealing cavity, the right sealing cavity and the lower sealing cavity so as to block the inlet runner and the outlet runner,
the left side wall of the valve body is provided with a first connecting groove, two sides of the lower end of the flashboard are respectively connected with a first filling assembly and a second filling assembly, the first filling assembly comprises at least one first filling block, a first connecting block is arranged on the side surface of each first filling block, the first connecting blocks are arranged in the first connecting grooves and can slide along the first connecting grooves, the upper ends of the first filling blocks are hinged with the flashboard, and when the flashboard is opened, the first filling blocks can be filled into the left sealing cavity, so that a medium is prevented from flowing into the left sealing cavity; the right side wall of the valve body is provided with a second connecting groove, the second filling assembly comprises at least one second filling block and every, the side face of the second filling block is provided with a second connecting block, the second connecting block is arranged in the second connecting groove and can slide along the second connecting groove, the upper end of the second filling block is hinged to the flashboard, and when the flashboard is opened, the second filling block can be filled into the right sealing cavity so as to avoid the medium flowing into the right sealing cavity.
In one embodiment, the first packing component comprises 5 first packing blocks, the first packing blocks are sequentially hinged, the first packing block at the top end is hinged with the lower end of the gate plate, the second packing component comprises 5 second packing blocks, the second packing blocks are sequentially hinged, and the second packing block at the top end is hinged with the lower end of the gate plate.
In one embodiment, the first connecting groove comprises a first long vertical groove, a first U-shaped groove and a first short vertical groove which are communicated, and the second connecting groove comprises a second long vertical groove, a second U-shaped groove and a second short vertical groove which are communicated.
In one embodiment, the first long vertical groove is located in the left sealing cavity, and the second long vertical groove is located in the right sealing cavity.
In one embodiment, the valve body is further provided with a first cleaning cavity and a second cleaning cavity, the first short vertical groove extends into the first cleaning cavity, the second short vertical groove is located in the second cleaning cavity, when the flashboard falls down, the first filling assembly slides from the first long vertical groove to the first short vertical groove to enter the first cleaning cavity, and the second filling assembly slides from the second long vertical groove to the second short vertical groove to enter the second cleaning cavity.
In one embodiment, the first cleaning cavity has a first liquid inlet at an upper end thereof, a first liquid outlet at a lower end thereof, and the second cleaning cavity has a second liquid inlet at an upper end thereof and a second liquid outlet at a lower end thereof.
The invention has the advantages that: (1) by arranging the first filling assembly and the second filling assembly, when the flashboard is opened and leaves the left sealing cavity and the right sealing cavity, the first filling assembly and the second filling assembly can enter the left sealing cavity and the right sealing cavity, so that impurities in a medium are prevented from being deposited in the left sealing cavity and the right sealing cavity, normal closing of the flashboard is influenced, and even the flashboard is damaged; (2) through setting up the washing chamber for deposit in first filling subassembly and the second fill impurity on the subassembly after getting into the washing chamber, can be by appropriate clearance, avoid depositing too much impurity between the filling block, influence the normal opening and closing of flashboard.
Drawings
FIG. 1 is a perspective view of a wellhead plate valve provided by the present invention;
FIG. 2 is a front view of a wellhead plate valve provided by the present invention;
FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a right side view of a wellhead plate valve provided by the present invention;
FIG. 5 is a cross-sectional view taken along plane B-B of FIG. 4 in accordance with the present invention;
FIG. 6 is an internal structural view of a valve body of a wellhead plate valve provided by the invention;
FIG. 7 is a perspective view of a wellhead plate valve of the present invention showing a first cleaning chamber and a second cleaning chamber;
FIG. 8 is a cross-sectional view of the present invention in another operational state according to FIG. 3;
fig. 9 is an internal structure view of a valve body of a wellhead plate gate valve according to the present invention.
In the figure, a valve body 1, an inlet flow passage 101, an outlet flow passage 102, a middle cavity 11, a left sealing cavity 12, a right sealing cavity 13, a lower sealing cavity 14, a first cleaning cavity 15, a first liquid inlet 151, a first liquid outlet 152, a second cleaning cavity 16, a first connecting groove 17, a first long vertical groove 171, a first U-shaped groove 172, a first short vertical groove 173, a valve cover 2, a valve rod 3, a gate plate 4, a first filling block 51, a first connecting block 511, a second filling block 52 and a second connecting block 521 are arranged.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 9, the present invention provides a wellhead plate valve, which includes:
the valve body 1 includes a middle chamber 11, a left seal chamber 12, a right seal chamber 13, a lower seal chamber 14, and an inlet flow passage 101 and an outlet flow passage 102 which are communicated with the middle chamber 11, and it should be mentioned that, in this embodiment, the valve body 1 includes a middle body, and a left cover plate and a right cover plate which are covered on two sides of the middle body;
the valve cover 2 is arranged at the upper end of the valve body 1 in a covering manner;
the valve rod 3 penetrates through the valve cover 2 and is in threaded connection with the valve cover 2;
the gate plate 4 is arranged in the middle cavity 11 and is rotatably connected with the valve rod 3, when the gate plate 4 moves into the left sealing cavity 12, the right sealing cavity 13 and the lower sealing cavity 14, the gate plate 4 is tightly attached to the side walls of the left sealing cavity 12, the right sealing cavity 13 and the lower sealing cavity 14, so as to block the inlet runner 101 and the outlet runner 102,
a first connecting groove 17 is formed in the left side wall of the valve body 1, a first filling assembly and a second filling assembly are respectively connected to two sides of the lower end of the gate plate 4, the first filling assembly comprises at least one first filling block 51, a first connecting block 511 is arranged on the side surface of each first filling block 51, the first connecting block 511 is arranged in the first connecting groove 17 and can slide along the first connecting groove 17, the upper end of the first filling block 51 is hinged to the gate plate 4, and when the gate plate 4 is opened, the first filling block 51 can be filled into the left sealing cavity 12, so that a medium is prevented from flowing into the left sealing cavity 12; a second connecting groove (not shown) is formed in the right side wall of the valve body 1, the second filling assembly comprises at least one second filling block 52, a second connecting block 521 is arranged on the side face of each second filling block 52, the second connecting block 521 is arranged in the second connecting groove and can slide along the second connecting groove, the upper end of each second filling block 52 is hinged to the corresponding gate plate 4, and when the gate plate 4 is opened, the second filling block 52 can be filled into the right sealing cavity 13, so that a medium is prevented from flowing into the right sealing cavity 13.
It will be appreciated that the first connecting slot 17 and the second connecting slot are symmetrically arranged so that the shutter 4 moves up and down to drive the first filling assembly and the second filling assembly to move synchronously.
Preferably, in this embodiment, the first filling assembly includes 5 first filling blocks 51, the first filling blocks 51 are sequentially hinged, the first filling block 51 at the top end is hinged to the lower end of the gate plate, the second filling assembly includes 5 second filling blocks 52, the second filling blocks 52 are sequentially hinged, and the second filling block 52 at the top end is hinged to the lower end of the gate plate 4.
Preferably, the first connecting groove 17 is composed of a first long vertical groove 171, a first U-shaped groove 172 and a first short vertical groove 173 which are connected, and the second connecting groove is composed of a second long vertical groove (not shown), a second U-shaped groove (not shown) and a second short vertical groove (not shown) which are connected.
Preferably, the first long vertical groove 171 is located in the left sealed cavity 12, and the second long vertical groove is located in the right sealed cavity 13.
Preferably, still have first washing chamber 15 and second washing chamber 16 in the valve body 1, first short vertical slot 173 stretches into in the first washing chamber 15, the short vertical slot of second is located in the second washing chamber 16, works as the back is fallen down to flashboard 4, first packing subassembly slides from first long vertical slot 171 to first short vertical slot 173, gets into first washing chamber 15, second packing subassembly slides from the long vertical slot of second to the short vertical slot of second, gets into in the second washing chamber 16.
Preferably, the first cleaning cavity 15 has a first inlet 151 at an upper end thereof and a first outlet 152 at a lower end thereof, and the second cleaning cavity 16 has a second inlet (not shown) at an upper end thereof and a second outlet (not shown) at a lower end thereof.
It should be noted that the first filling block 51 in the first washing chamber 15 can be cleaned by introducing liquid from the first liquid inlet 151 and discharging liquid from the first liquid outlet 152, so as to avoid obstruction by sludge during operation, and the second washing chamber 16 operates in the same manner as the first washing chamber 15.
The working mode of the invention is as follows: as shown in fig. 2 and 3, when the gate plate 4 is in an open state, the first filling block 51 is located in the first long vertical groove 171 and fills the left sealing chamber 12, and the second filling block 52 is located in the second long vertical groove and fills the right sealing chamber 13, so that impurities in the medium are not deposited in the left sealing chamber 12 and the right sealing chamber 13, and the gate plate 4 is prevented from being damaged by the deposited impurities when the gate valve is closed.
The valve rod 3 is rotated forward to drop the shutter 4 to enter the left sealing chamber 12, the right sealing chamber 13 and the lower sealing chamber 14, so that the inlet flow passage 101 and the outlet flow passage 102 are completely blocked, as shown in fig. 9, the shutter 4 is in a closed state, the first filling block 51 enters the first cleaning chamber 15 along the first connecting groove 17, and the second filling block 52 enters the second cleaning chamber 16 along the second connecting groove.
It is worth mentioning that medium flow is carried out through first inlet, first liquid outlet, second inlet, second liquid outlet intermittence and outside in first washing chamber 15 and second washing chamber 16 with the second washing chamber 16, and after first filling block 51 and second filling block 52 got into first washing chamber 15 and second washing chamber 16, the medium that can be washd the intracavity was washd to can avoid impurity to get into and influence the normal work of gate valve in the clearance between the filling block.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A wellhead plate valve, characterized in that, said wellhead plate valve includes:
the valve body is provided with a middle cavity, a left sealing cavity, a right sealing cavity, a lower sealing cavity, an inlet runner and an outlet runner, wherein the middle cavity, the left sealing cavity, the right sealing cavity and the lower sealing cavity are communicated with each other;
the valve cover is arranged at the upper end of the valve body in a covering manner;
the valve rod penetrates through the valve cover and is in threaded connection with the valve cover;
the flashboard is arranged in the middle cavity and is rotationally connected with the valve rod, when the flashboard moves to the left sealing cavity, the right sealing cavity and the lower sealing cavity, the flashboard is tightly attached to the side walls of the left sealing cavity, the right sealing cavity and the lower sealing cavity so as to block the inlet runner and the outlet runner,
the left side wall of the valve body is provided with a first connecting groove, two sides of the lower end of the flashboard are respectively connected with a first filling assembly and a second filling assembly, the first filling assembly comprises at least one first filling block, a first connecting block is arranged on the side surface of each first filling block, the first connecting blocks are arranged in the first connecting grooves and can slide along the first connecting grooves, the upper ends of the first filling blocks are hinged with the flashboard, and when the flashboard is opened, the first filling blocks can be filled into the left sealing cavity, so that a medium is prevented from flowing into the left sealing cavity; the right side wall of the valve body is provided with a second connecting groove, the second filling assembly comprises at least one second filling block and each second filling block is laterally provided with a second connecting block, the second connecting block is arranged in the second connecting groove and can slide along the second connecting groove, the upper end of the second filling block is hinged to the flashboard, and when the flashboard is opened, the second filling block can be filled into the right sealing cavity, so that a medium is prevented from flowing into the right sealing cavity.
2. The wellhead plate valve according to claim 1, wherein the first packing assembly comprises 5 first packing blocks, the first packing blocks are sequentially hinged, the first packing block at the top end is hinged with the lower end of the gate plate, the second packing assembly comprises 5 second packing blocks, the second packing blocks are sequentially hinged, and the second packing block at the top end is hinged with the lower end of the gate plate.
3. A wellhead plate valve according to claim 2, characterised in that said first connecting slot comprises a first long vertical slot, a first U-shaped slot and a first short vertical slot in communication, and said second connecting slot comprises a second long vertical slot, a second U-shaped slot and a second short vertical slot in communication.
4. The wellhead plate valve according to claim 3, wherein the first long vertical slot is located in the left seal cavity and the second long vertical slot is located in the right seal cavity.
5. The wellhead plate valve according to claim 4, wherein the valve body further comprises a first cleaning chamber and a second cleaning chamber, the first short vertical groove extends into the first cleaning chamber, the second short vertical groove is located in the second cleaning chamber, when the gate plate falls down, the first filling assembly slides from the first long vertical groove to the first short vertical groove to enter the first cleaning chamber, and the second filling assembly slides from the second long vertical groove to the second short vertical groove to enter the second cleaning chamber.
6. The wellhead plate valve according to claim 5, wherein the first cleaning cavity is provided with a first liquid inlet at the upper end and a first liquid outlet at the lower end, and the second cleaning cavity is provided with a second liquid inlet at the upper end and a second liquid outlet at the lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173350.XA CN112240402A (en) | 2020-10-28 | 2020-10-28 | Well head plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173350.XA CN112240402A (en) | 2020-10-28 | 2020-10-28 | Well head plate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240402A true CN112240402A (en) | 2021-01-19 |
Family
ID=74170041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011173350.XA Withdrawn CN112240402A (en) | 2020-10-28 | 2020-10-28 | Well head plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112240402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531136A (en) * | 2021-08-09 | 2021-10-22 | 宁波诚天液压有限公司 | One-way fine adjustment type hydraulic control throttling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2413007A1 (en) * | 2010-07-26 | 2012-02-01 | Orbinox valves international, S.L. | Process for manufacturing guillotine valves |
| JP2012092880A (en) * | 2010-10-26 | 2012-05-17 | Maezawa Ind Inc | Gate valve |
| CN203214913U (en) * | 2013-01-29 | 2013-09-25 | 浙江上一阀门有限公司 | Non-guide-hole flat gate valve |
| CN109282048A (en) * | 2018-10-08 | 2019-01-29 | 浙江标盛阀门制造有限公司 | A kind of fast opening and closing low torque automatically cleaning flat gate valve |
| CN209875991U (en) * | 2019-04-25 | 2019-12-31 | 浙江东嘉阀门制造有限公司 | Bevel gear single-clamp knife-type gate valve capable of cleaning |
| CN211202934U (en) * | 2019-11-25 | 2020-08-07 | 温州市海格阀门有限公司 | Long-life high-sealing gate valve |
-
2020
- 2020-10-28 CN CN202011173350.XA patent/CN112240402A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2413007A1 (en) * | 2010-07-26 | 2012-02-01 | Orbinox valves international, S.L. | Process for manufacturing guillotine valves |
| JP2012092880A (en) * | 2010-10-26 | 2012-05-17 | Maezawa Ind Inc | Gate valve |
| CN203214913U (en) * | 2013-01-29 | 2013-09-25 | 浙江上一阀门有限公司 | Non-guide-hole flat gate valve |
| CN109282048A (en) * | 2018-10-08 | 2019-01-29 | 浙江标盛阀门制造有限公司 | A kind of fast opening and closing low torque automatically cleaning flat gate valve |
| CN209875991U (en) * | 2019-04-25 | 2019-12-31 | 浙江东嘉阀门制造有限公司 | Bevel gear single-clamp knife-type gate valve capable of cleaning |
| CN211202934U (en) * | 2019-11-25 | 2020-08-07 | 温州市海格阀门有限公司 | Long-life high-sealing gate valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531136A (en) * | 2021-08-09 | 2021-10-22 | 宁波诚天液压有限公司 | One-way fine adjustment type hydraulic control throttling device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210119 |
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| WW01 | Invention patent application withdrawn after publication |